InFocus LP340 Service Manual Download

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LP340/340B/350 Service Manual

Special Handling for the DMD and Optical Engine

The LP340/340B/350 models differ from some other DLP projectors built by InFocus. To save space and

weight, the Texas Instruments circuitry is located on the controller ECA instead of on a separate board.

This means the controller ECA must directly contact the DMD elastomers to transmit the image signals to

the DMD.

To allow proper contact, the DMD is not fastened to the optical engine. This allows accurate alignment

when the controller ECA rests on the DMD. Four screws fasten the controller ECA to the engine around

the DMD. This sandwiches the DMD and the elastomers between the two, ensuring even pressure and

good contact.

The DMD is a very delicate, very expensive component. It is susceptible to shock, ESD and dust.

Make sure you work on the projector only on a soft, ESD-protected workspace.

Summary of Contents for LP340

Page 1: ...Service Guide for the LP340 LP340B LP350 ...

Page 2: ... time Measure the AC voltage across the combina tion of 1500ohm resistor and 0 15 µF capacitor Reverse the AC plug at the AC outlet and repeat AC voltage mea surements for each exposed metallic part Voltage mea sured must not exceed 5 25V rms This corresponds to 3 5 mA AC Any value exceeding this limit consti tutes a potential shock hazard and must be corrected immediately PRODUCT SAFETY NOTICE Ma...

Page 3: ...mbly 24 Chassis and Attached Parts 28 Power Supply 34 Chassis 36 Top Case 37 Keypad 38 I O EMI Shield 39 Removing theController ECA 40 Installing the Controller ECA 45 Removing the Optical Engine 48 Installing the Optical Engine 50 60 Mm Lamp Fan and Lamp Blower 52 Lamp Housing 55 Safety Switch Assembly 57 Resetting the Lamp Timer 60 Special Handling for the DMD and Optical Engine 61 Fasteners 67 ...

Page 4: ...oblems 100 Audio Problems 101 No Menu 102 LP350 LP340 LP340B Block Diagram 103 LP350 LP340 LP340B Controller ECA Voltages 104 Parts Lists 105 Case Parts Exlploded View 105 Components Exploded View 106 Optical Engine Exploded View 107 FRUs by Alphabetic Listing 108 FRUs by Numeric Listing 110 Standard Accessories 111 ...

Page 5: ...mful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense WARNING Changes or modifications made to this equipment not expressly approved by Toshiba or parties authorized by Toshiba could void the user s authority to operate the equipment N...

Page 6: ... the product and to protect it from overheating and these openings must not be blocked or covered The openings should never be blocked by placing the product on a bed sofa rug or other similar surface This product should not be placed in a built in installation such as a bookcase or rack unless proper ventilation is provided or the manufacturer s instructions have been adhered to IMPORTANT SAFETY ...

Page 7: ...NSTRUCTIONS 16 Damage Requiring Service Unplug this product from the wall outlet and refer servicing to qualified service personnel under the following conditions a When the power supply cord or plug is damaged b If liquid has been spilled or objects have fallen into the product c If the product has been exposed to rain or water d If the product does not operate normally by following the operating...

Page 8: ...d LP340B are extremely easy to service The number of boards in the projector has been reduced to one Voltage and resistance testing is easy too You need only to remove the bottom case to access test points Nearly all the interior replaceable parts fasten to a magnesium chassis You can pull everything out of the case by removing just a few screws Below is a table that shows the differences among th...

Page 9: ...hows the chassis and attached parts removed from the top case and placed upside down Speaker fan bracket 505 0643 xx Optical Engine LP350 530 0110 xx LP340 LP340B 530 0111 xx Lamp fan 526 0058 xx Controller ECA LP350 510 1523 xx LP340 510 1485 xx LP340B 510 1573 xx Power supply 510 1486 xx Chassis 330 0602 xx Chassis 330 0602 xx Lamp module SP LAMP LP3E and Lamp housing All 505 0632 xx ...

Page 10: ...he projector The lamp door 505 0638 xx covers the lamp module It includes a tab that closes the interlock switch when the door is shut The projector will not operate without the lamp door in place CAUTION The lamp module gets very hot during operation Allow the lamp to cool for 30 minutes before handling it 1 Place the projector on its top on a soft surface 2 Release the two tabs on the inside edg...

Page 11: ...sp the tape in the middle of the lamp then lift the module out of the projector Assembly Notes The lamp must be seated properly and the lamp door must be in place for the lamp to ignite Torque the two captive screws to 6 in lbs 678 N m If you installed a new lamp module you must reset the lamp timer See page 60 ...

Page 12: ...he focus ring and must be removed before detaching the focus ring from the lens barrel The front bezel LP340 350 505 0638 xx LP340B 505 0636 xx covers the front of the projector It helps secure the top and bottom cases together The front bezel fastens to the metal chassis inside the projector with one screw The front bezel includes the IR lens 1 Pull the lens cap off the projection lens 2 Hold the...

Page 13: ...mbly Notes Insert the two hinges on the front bezel into their matching slots on projector Then swing the front bezel over the projection lens Torque the black M3x8 screw to 4 in lbs 452 N m Align the focus ring with the lens barrel then press it on until it snaps into place You ll feel the three slots on the focus rings engage the three tabs on the lens barrel ...

Page 14: ...rojector with one screw The InFocus nameplate 505 00668 xx fastens to the rear bezel over the screw 1 Use a small bladed screwdriver to pry the InFocus nameplate off of the rear bezel 2 Use a T 10 Torx driver to remove the black M3x8 black Torx screw from beneath the nameplate 3 Swing the front bezel away from the lens side so that the hinges under the side opposite the screw disengage from the to...

Page 15: ...t side of the bezel into their matching slots on projector Then swing the bezel into place Fasten the bezel to the projector with the black M3x8 screw Tighten the screw to 4 in lbs 452 N m Press the nameplate onto the rear bezel over the screw It should fit flush against the bezel ...

Page 16: ...xx attached to the bottom rear of the LP340 340B 350 The projector rests on this foot and the leveling foot in the rear and on the elevator in front To replace a rubber foot peel the protective paper off the bottom of the foot Then press the foot into the oval recess in the bottom case ...

Page 17: ...el is not a replaceable part You remove the serial number label from the old bottom case and attach it to the new certification label Finally the model label LP340 020 0975 xx LP340B 020 1115 xx LP350 020 0976 xx adheres to side of the bottom case just above the leveling foot CAUTION Take extreme care not to scratch the finish on the projector 1 Remove the following items Lamp door page 10 Focus r...

Page 18: ...over the I O connectors CAUTION Whenever you open the case on the projector make sure you use proper ESD protection 5 If you re replacing the bottom case with a new one remove the Serial Number label from the lower left corner of the Certification label To do this carefully use a heat gun or hair drier to soften the label Then peel it off ...

Page 19: ...ix a new Certification label to the recessed area between the elevator and the lamp housing Then affix the old Serial Number label to the lower left corner of the certification label Affix a new model label to the recessed space above the leveling foot ...

Page 20: ...oot is comprised of a rubber foot a shaft and a screw that fastens the two pieces together NOTE If you need to replace only the foot itself follow only steps two three and four below 1 Remove the bottom case see page 17 2 Turn the leveling foot counterclockwise until it is fully extended 3 Use a T 10 Torx driver to remove the M3x8 plastite screw from the bottom of the leveling foot 4 Pull the foot...

Page 21: ...LP340 340B 350 Service Manual 21 5 From the inside of the bottom case use a Phillips screwdriver to remove the shaft Assembly Note Note that the leveling foot and shaft fit together only one way ...

Page 22: ...or includes the elevator button The elevator is gravity loaded When the user presses the elevator button the shaft emerges from the bottom By holding the button in while raising and lowering the projector the user finds the appropriate level When the user releases the elevator button the actuator locks the shaft into place The elevator fastens to the inside of the bottom case 1 Remove the bottom c...

Page 23: ...ab at the end of the actuator into the spring 2 Insert the end of the actuator with the spring into the elevator button opening Seat the actuator end so that it goes through the elevator housing 3 Press and hold the elevator button 4 Insert the elevator shaft into the elevator housing from the bottom 5 Release the elevator button The teeth on the shaft engage the actuator and the elevator stays in...

Page 24: ...ity in the top case between the optical engine and the rear bezel 1 Remove the bottom case see page 17 2 Disconnect the speaker and fan cables from their connectors on the controller ECA 3 Use a T 10 Torx driver to remove the M3x8 Torx screw that fastens the speaker fan assembly to the inside of the top case The screw is located at the bottom of the recess between the speaker and the controller EC...

Page 25: ...al 25 4 Lift the speaker fan assembly out of the projector NOTE If you re removing the assembly to access another part you can stop here 5 To replace the speaker remove the M3x6 Torx screw that fastens the speaker to the bracket ...

Page 26: ...s that fasten the fan to the bracket Assembly Notes If you removed the 60 mm fan position the fan on the speaker fan bracket so the label on the fan faces outward when the fan is installed The power cable should emerge at the top right of the fan Tighten the two M3x20 Phillips screws to 4 in lbs 452 N m ...

Page 27: ...the cable slot in the speaker fan bracket When you replace the assembly slide the tab on the bottom right side of the speaker fan bracket into the slot in the top case Then replace the M3x6 screw near the speaker Make sure both cables are plugged in The projector will not operate without the 80mm fan plugged in ...

Page 28: ...30 0602 xx You remove the chassis and these attached units from the top case as one piece Then you can remove and replace individual parts as needed WARNING Make sure the power cord is not plugged into the unit when you begin working on the inside of the projector 1 Remove the following items Bottom case see page 17 Lamp module see page 10 Speaker fan assembly see page 24 2 Remove the keypad cable...

Page 29: ...0 340B 350 Service Manual 29 3 Use a T10 Torx driver to remove the six M3x8 Torx screws that fasten the chassis and attached parts to the top case 4 Carefully lift the chassis and parts out of the top case ...

Page 30: ...pposite the I O panel As you lift flex the top case next to the power switch This allows the power switch and plug to clear the edge of the case Once the power switch and plug clear the case edge you can pull the lamp connector out of its recess in the top case ...

Page 31: ...pecial care not to scratch the surface of the top case when installing the chassis The controller ECA the optical engine and the power supplies all have sharp edges that can damage the special finish on the case halves To install the chassis and attached parts do the following 1 Align the lamp connector with the two recesses in the top case Note that connector is keyed with the recesses ...

Page 32: ...ugh its hole in the lamp housing 3 Seat the chassis on the posts in the top case Then torque the six M3x8 Torx screws to 6 in lbs 678 N m If you have trouble aligning the holes on the chassis with the posts in the top case see the note below 4 Install the keypad cable in its ZIF connector Route the cable through the channel in the chassis See the photo in step 2 for proper routing ...

Page 33: ... separated and you have trouble starting the screws 1 With the chassis and parts in the top case remove the DMD heat spreader 2 Loosen the two M3x8 screws that fasten the controller to the chassis 3 Loosen the four screws that fasten the DMD stiffener to the chassis and engine 4 Adjust the chassis and engine so the screw holes align with the posts in the top case 5 Re torque the stiffener screws i...

Page 34: ...nd the power supply 1 Remove the chassis and attached parts from the top case see page 28 2 Place the chassis on a soft ESD protected work surface so that the controller is face down 3 Unplug the black safety switch cable from its connector on the power supply 4 If you didn t remove the lamp unplug the lamp connector on the bottom of the lamp housing 5 Remove the M3x8 Torx screw that secures the g...

Page 35: ... gently lift the corner of low voltage power supply nearest to the front of the projection lens See illustration above Assembly Notes Before installing the power supply make sure the paper insulator 120 0147 xx is in good condition If it appear damaged or is missing replace it The insulator is keyed to tabs on the chassis Note that foam square circled below faces the power supply Torque the screws...

Page 36: ...ry rigidity for the projector s internal components yet it adds very little to the overall weight 1 Remove the following items Chassis and attached parts from the top case see page 28 Controller ECA see page 40 Optical engine see page 48 Power supply see page 34 You re left with the bare chassis ...

Page 37: ...op case you must first remove all the parts in the old case then install them in the new top case In the LP340 340B 350 you can remove most of the interior parts at once 1 Remove the chassis and attached parts from the top case page 28 2 Remove the keypad page 38 You re left with the top case Assembly Note Adhere an InFocus nameplate label 020 0846 xx to the new top case ...

Page 38: ...ives the signal and passes it on to the controller ECA via the keypad cable A processor on the controller ECA processes the signal 1 Remove the chassis and attached parts from the top case see page 28 2 On the inside of the top case remove the two M3x8 Torx screws that fasten the keypad to the case Then lift the keypad out of the projector Assembly Notes Note the orientation of the keypad cable It...

Page 39: ...e CableWizard connector 3 Remove the two jack screws on either side of the M 1 connector 4 Gently work the shield off of the connectors Assembly Notes Make sure the small fingers in the holes that fit over the S Video and composite video connectors fit snuggly Make sure the fingers on the bottom of the shield contact the chassis Contact assures that video and audio noise drain off to ground Torque...

Page 40: ...signal for the DMD In addition the controller ECA has the I O circuitry to which the user connects peripheral devices CAUTION Whenever you open the case on the projector make sure you use proper ESD protection The controller ECA mounts on the chassis It surrounds the lamp housing 1 Remove the bottom case see page 17 NOTE The controller ECA can be removed without removing the chassis from the top c...

Page 41: ... ECA Then lift the heat sink off of the top of the controller 4 Remove the DMD stiffener the plastic DMD insulator attached to the bottom of the DMD stiffener and the two DMD EMI clips from the top of the controller ECA all part of the DMD Mounting Kit 505 0778 xx To do this remove the four M3x10 Torx screws then lift the pieces off ...

Page 42: ...LP340 340B 350 Service Manual 42 5 Remove the four M3x8 Torx screws that fasten the controller ECA to the chassis ...

Page 43: ...tom of the controller and then fall off once the board is lifted If the DMD is damaged the optical engine must be replaced See page 62 for information about reinstalling a DMD At this point you can read the DMD bias setting on the label on the back of the DMD This setting is required when you check and adjust the DMD bias setting on the controller ECA Go to page 75 Updating the DMD Bias Setting Be...

Page 44: ...ener and controller ECA from the projector the DMD and elastomer float loose in the opening on top of the optical engine Take extreme care not to dislodge the DMD or elastomer If the DMD is damaged the optical engine must be replaced See page 62 for information about reinstalling a DMD 8 Go to the next page for Controller ECA installation instructions ...

Page 45: ...2 Check the condition of the elastomers on the DMD If necessary clean the elastomers Do not touch the elastomers with your fingers or lift the DMD off of the engine For information about cleaning the elastomers see Special handling for the DMD on page 61 3 Place the controller onto the engine and chassis so the DMD fits into its opening in the controller Align the controller power supply connector...

Page 46: ... EMI clips on opposite corners Then fasten the pieces down with the four M3x10 Phillips screws in an X fashion as indicated by the numbers in the illustration below Torque the screws to 6 in lbs 678 N m 5 Install the DMD heat sink Torque the two 6 32x Phillips screws to 6 in lbs 678 N m ...

Page 47: ...ty The bottom case fastens in these holes 7 Attach the color wheel cable to its ZIF connector and the lamp fan and blower to their connectors 8 If you removed the controller while it was still in the bottom case attach the keypad cable 9 Once the projector is reassembled be sure to check the DMD bias setting on the new controller ECA See page 75 Updating the DMD Bias Setting for information ...

Page 48: ...date the bias setting for the DMD any time you replace the controller ECA or the optical engine See page 70 for instructions 1 Remove the lamp module and the lamp door see page 10 2 Remove the chassis and attached parts from the top case see page 28 3 Place the chassis on a soft surface so that the controller ECA faces downward 4 Detach the safety switch cable black cable below from its connector ...

Page 49: ...CAUTION Do not remove the DMD from its location on the optical engine Doing so can allow contamination of the prism and the DMD surface If the DMD and its carrier comes off the engine see page 62 for the correct procedure to reinstall the DMD 8 Lift the engine up using both hands and place in a clean ESD safe container WARNING Handle the engine only by the projection lens and lamp housing 9 Go to ...

Page 50: ... into place over the engine Make sure the DMD and elastomer align with the opening in the chassis 4 Check the condition of the elastomers on the DMD If necessary clean the elastomers See page 59 for details 5 Take note of the DMD bias setting page 45 on the label affixed to the rear of the DMD 6 Install the controller ECA see page 45 7 Attach the color wheel ribbon cable and the lamp and blower fa...

Page 51: ...nd the safety switch cable 9 Install the chassis and attached parts in the top case see page 28 10 Install the speaker fan assembly see page 24 11 Install the bottom case see page 17 12 Install the lamp module and lamp door see page 10 13 Check and adjust the DMD bias setting see page 70 ...

Page 52: ...with a new lamp housing or with a new optical engine Both are also available separately To remove the 80mm fan 1 Remove the chassis and attached parts from the top case see page 28 2 Remove the optical engine see page 47 CAUTION Make sure you install the DMD protective cover before proceeding see page 48 3 On the bottom of the lamp housing remove the cable from the cable clip and pull the cable fr...

Page 53: ...rx screws that fasten the 60mm lamp fan to lamp housing Then remove the fan To remove the lamp blower 1 Remove the two M3x12 Torx screws that fasten the blower to the lamp housing Assembly Notes The side of the fan that includes the foil reflector faces inward ...

Page 54: ...LP340 340B 350 Service Manual 54 Route the fan and blower cables so they emerge on between the color wheel housing and the lamp housing Torque all screws to 4 in lbs 452 N m ...

Page 55: ...tical engine includes a lamp housing lamp module safety switches and fans 1 Remove the lamp module see page 10 2 Remove the chassis and attached parts from the top case see page 28 3 Remove the optical engine see page 48 CAUTION Make sure to place the DMD cap over the DMD so that it does not fall out of its housing 4 Remove the two M3x8 Torx screws that fasten the lamp housing to the metal color w...

Page 56: ...LP340 340B 350 Service Manual 56 Assembly Notes When you install the lamp housing route the fan and blower cables between the lamp housing and chassis Torque the M3x8 Torx screws to 6 in lbs 678 N m ...

Page 57: ...ttaches to the high voltage power supply The safety switch assembly comes with a new lamp housing as well as with a new optical engine WARNING Make sure the power cord is not plugged into the unit when you begin working on the inside of the projector 1 Remove the chassis and attached parts from the top case see page 28 2 Place the chassis upside down on a soft ESD protected surface 3 Disconnect th...

Page 58: ...rom the top of the lamp housing To do this use a small screwdriver to depress the plastic tabs in each screw hole on the thermal switch body Then rotate the thermal switch clockwise CAUTION Be extremely careful not to press the tabs too hard They are easy to break ...

Page 59: ...tch between the power supply and lamp housing Assembly Notes When you install the safety switch assembly begin with the thermal switch This leaves room for you to rotate it into position without stretching the wires that lead to the interlock switch Make sure to secure the cable on the clip on the bottom of the lamp housing ...

Page 60: ...ctor in and press the Power button above the I O panel The startup screen appears 2 Press and hold the Volume button 3 While holding the Volume button down press the Menu button for at least five seconds 4 To confirm that the lamp timer has reset press the Menu button then select Show Status on the Status menu 5 The Lamp Hours Used line located at the top of the Status box should read 0000 ...

Page 61: ... the DMD elastomers to transmit the image signals to the DMD To allow proper contact the DMD is not fastened to the optical engine This allows accurate alignment when the controller ECA rests on the DMD Four screws fasten the controller ECA to the engine around the DMD This sandwiches the DMD and the elastomers between the two ensuring even pressure and good contact The DMD is a very delicate very...

Page 62: ... optical engine could result in replacing both parts The DMD and optical engine come in sets both matched to provide the best image If the DMD falls to the floor chances are the shock of the fall has ruined the DMD You can attempt to retrieve the DMD and replace it on the optical engine However you re likely to see a broken image or no image at all The optical engine will likely need to be replace...

Page 63: ...erly The DMD carrier and elastomers are available in the DMD elastomer kit 505 0779 xx A new DMD is available only with a new optical engine It cannot be ordered separately Below is an exploded view of the LP350 DMD and its carrier and elastomers The LP340 340B is similar 1 Turn the carrier upside down and place the top of the DMD on the carrier Note that it fits only one way ...

Page 64: ...0B 350 Service Manual 64 2 Use a tweezers to place the elastomers into their slots in the DMD carrier Do not touch them with your fingers CAUTION Take extreme care that the DMD does not fall out of the carrier ...

Page 65: ...it the engine housing See the illustration below Make sure the DMD fits into the opening in the proper orientation The DMD should fit loosely into the opening and the pins on opposite corners should fit into matching holes on the engine casting Do not force fit the DMD into the opening If the DMD is backwards the controller ECA may be destroyed when the projector is powered up ...

Page 66: ...ontroller ECA clean the elastomers to ensure good contact between the DMD and controller ECA To clean the elastomers use a clean new acid brush Brush the elastomers gently from end to end 3 Complete the installation by installing the controller ECA see page 45 ...

Page 67: ...ntroller ECA to chassis 7 M3x10 Phillips SEM DMD stiffener and spring shields to controller ECA 4 M3x8 Black TORX Bottom case to chassis 5 front bezel to chassis 1 rear bezel to chassis 1 M2 6x8 PHP I O shield to controller ECA at CableWizard connector 2 M3x8 TORX SQ Cone SEM Lamp housing to optical engine 2 6 32x3 8 PHP Zinc DMD heat sink to heat spreader 2 Jack screws I O shield to controller EC...

Page 68: ...ngine or controller ECA Upgrading the System Software for the LP350 LP340 and LP340B To upgrade the software on the projector you need to do the following Download the software from the InFocus web site Load the software on your computer Connect the computer and projector Install flash the software on the projector Downloading the Software to your Computer 1 In the Projector Software page click th...

Page 69: ...you want to store the file then click OK NOTE Once you install the software files you won t need the EXE file you download You may want to save it in a temporary folder or in the Briefcase The file downloads to your computer s hard drive Now you re ready to install the software on the computer ...

Page 70: ...orer 2 In Windows Explorer locate the EXE file that contains the upgrade files then double click it 3 The WinZip Self Extractor dialog box appears asking you where you want to store the upgrade files Enter the path to the folder where you store software NOTE If you can t find the file use the Windows Find feature to locate the file On the Tools menu point to Find then click Files or Folders In the...

Page 71: ...se connector on the CableWizard 3 Plug the other end of the serial cable into the Communication Port 1 COM1 on the computer 4 Connect the CableWizard connector to the CableWizard port on the projector I O panel NOTE If needed you can attach the serial cable to COM2 These instructions address use of either serial port 5 Plug the power cord into the projector and into a power source Now you re ready...

Page 72: ...in this example NOTE If you connected the serial cable to the COM2 use the Com2 batch file T1C2 in the example above The DOS window opens displaying instructions and upgrade status 2 When the prompt Press any key to continue appears press any key on the computer keyboard A second screen appears again with the prompt Press any key to continue ...

Page 73: ...the projector within five seconds of the appearance of the timer The upgrade files download to the projector This takes several minutes If you see the message No response it means the projector wasn t turned on within five seconds WARNING Turning the projector off while the upgrade files transfer can damage the controller ECA 5 When the installation is complete the lamp ignites and the startup scr...

Page 74: ...ual 74 Confirm the Software Upgrade 1 On the projector keypad press Menu to display the menus 2 Use the remote control or the keypad buttons to open the Status window The new software version number appears in the Status window ...

Page 75: ...and can shorten the life of the DMD NOTE The projector must be partially disassembled to check the bias setting on the DMD label See Removing and Replacing the Controller ECA on page 40 for disassembly instructions You change the DMD bias setting on the controller with a Serial Interface Utility You download the utility at the InFocus web site To check and adjust the DMD setting you need the follo...

Page 76: ...ve the controller ECA you can see the DMD label Each DMD has its bias setting marked on a label that is affixed to the rear of the DMD case The example below indicates a bias setting of E For the LP340 and LP340B the setting is A B C or D The setting is always listed at the end of the second line of numbers For the LP350 the setting is B C D or E Once you have this information you can check and ad...

Page 77: ...340B 350 Projector Software page click DMD Bias Serial Interface Utility Version 1 04 The File Download dialog box appears 2 In the File Download box select Save This Program To Disk option then click OK 3 In the Save As dialog box navigate to the folder in which you want to store the file then click OK ...

Page 78: ...you install the software files you won t need the EXE file you download You may want to save it in a temporary folder or in the Briefcase 4 The file downloads to your computer s hard drive Now you re ready to install the utility on your computer ...

Page 79: ...wnloaded from the InFocus web site then double click it to open it The WinZip Self Extractor dialog box appears 2 Click Unzip then click Close after the file unzips The Installation Wizard appears 3 Follow the Installation Wizard to install Serial Interface Utility on your computer When the Serial Interface Utility installs it adds a program group to the Start menu ...

Page 80: ...e CableWizard window 2 Plug the PS 2 end of the serial cable into the mouse connector on the CableWizard 3 Plug the other end of the serial cable into the Communication Port 1 COM1 on the computer 4 Connect the CableWizard connector to the CableWizard port on the projector I O panel NOTE If needed you can attach the serial cable to COM2 These instructions address use of either serial port 5 Plug t...

Page 81: ...uter To do this click the Start button point to Programs point to Serial Interface Utility Then click Serial Interface Utility 2 On the Read menu click Bias 300 Series The Serial Utility opens and then displays the current bias setting for the controller ECA in the Serial Utility window You know that utility is working when you see the Heart Beat box flashing red see below Here the controller ECA ...

Page 82: ...etting on the controller ECA correctly corresponds with the setting on the DMD label you leave the setting as it is You re done Or If the bias setting on the controller ECA does not correspond with the setting on the DMD label continue to the next step 4 In the Write menu click Bias 5 The Bias box appears in the Serial Utility window 6 Enter the letter that corresponds to the letter on the DMD lab...

Page 83: ...0B 350 Service Manual 83 7 Click OK The Bias Value changes to the letter you entered 8 Click the Quit button in the lower left corner of the Serial Utility window You ve now reset the DMD bias for the projector ...

Page 84: ...d laser disc players reproduce colors better and project sharper images The least preferable is a VCR If you use a VCR make sure you use a commercially produced recording not one recorded from a broadcast source The VCR must include an S video connector in addition to a composite connector Commercially produced video You ll need the video in DVD laser disc or video cassette format Audio cable Use ...

Page 85: ...0 angle to the wall Verify that the elevator and leveling foot are functional Verify that the rubber foot is in place Verify that the focus and zoom rings operate properly Verify that all labels are in place Verify cosmetics Power Up Connect AC power and turn the unit on Verify that the proper splash logo screen appears Verify image quality Composite video from video source On the keypad press the...

Page 86: ... button on the keypad Verify software version Verify the keys are not sticky Verify unit goes in and out of standby mode The next step is to observe 3 computer images These will confirm that the computer input works properly and will test image quality Press the Computer button on the keypad Verify that the images project synchronize properly through the following inputs M1 Analog M1 Digital LP340...

Page 87: ...dle icon turn the zoom ring to make the largest image then repeat the focus tests Verify that all four corner icons have clear resolution Verify that the white space is visible on all 5 bar line icon areas between green Verify that the image focuses through the full zoom range Image 2 Color Ramp Project the Color Ramp image Verify there are no missing parts of the ramp Verify that the bars are not...

Page 88: ...licating columns or other general image abnormalities present On the keypad press Menu On the Display menu select Reset All Verify that the image synchronizes Power Down After all tests are complete turn the power off and disconnect all cables Attach the lens cap Verify unit is powered off before disconnecting cables ...

Page 89: ...hat help you diagnose problems with the projector a Power Problems page 90 b Image Problems page 95 c Remote Problems page 99 d Keypad Problems page 100 e Audio Problems page 101 f No Menu page 102 A system controller ECA block diagram page 103 Voltage check points on the controller ECA page 104 ...

Page 90: ...ector will not power up only partially powers up or will not remain powered up No lamp Fans are running No signs of power No fans no LED What is the problem Lamp or projector shuts off after running a short period of time See page 91 See page 93 See page 92 ...

Page 91: ...nown good power cord Does the projector power up Yes No Replace power cord Replace power supply The lamp door interlock switch only causes the ballast to not light the lamp Fans run and bootup occurs Lamp enable voltage comes on for 30 seconds goes off for 10 seconds then the pattern repeats ...

Page 92: ...rd is faulty and breaking down when hot The thermal switch is faulty very rare Are visible fans running Blower fan voltage 6 8 volts Replace controller ECA Note For each of the following substitutions run the projector long enough to get hot and shut down if the part substituted was not the problem Replace the lamp fan or the 80mm fan Is the fan running Replace controller ECA voltage to fan is bad...

Page 93: ...ng on this wiring is a good check to see if it is secure Replace the safety switch assembly No Lamp Remove the lamp to see if it looks good There should be no ruptures no bulges no cracks in reflector A good lamp can be substituted if you want to be absolutely certain the lamp is not the problem Replace the lamp module Go to the next page A bad CableWizard cable inter connect device can cause no l...

Page 94: ...n plug in the good fan without installing it Does the good fan run Replace Controller board bad voltage to fan Replace fan assembly These fans have a feedback sensor line that disables the ballast and lamp Note Color wheel must also be running for a good lamp enable signal The color wheel is very hard to hear in these projectors but it s failure is almost always the cause of bad voltage from the c...

Page 95: ...ted image noisy rolling torn frozen plaid repeated or shifted image Flash or reflash the projector with the latest software Confirm that all image adjustments are set to the factory defaults On the Display menu choose Reset All Confirm that the cables and the source signals are good If in doubt feed the signal to a good projector What is the problem Dim image Has the DMD been moved from its mount ...

Page 96: ...image correct No Replace the optical engine Check the DMD bias setting on the controller ECA Is the image correct Note A misaligned DMD elastomer can cause image probllems If the DMD has been distrurbed either when replacing the engine or controller you can trying aligning and cleaning the DMD elastomers See Special Handling for the DMD and optical engine ...

Page 97: ...nt or color Missing startup screen VGA composite video or S video Distorted image excess noise rolling image torn image frozen image plaid image repeated single image or shifted image Make sure cables are good Is the image correct No Replace the controller ECA ...

Page 98: ...ual 98 dimimage Dim image Substitute known good lamp Is the image brighter Substitute a known good controller ECA Is the image brighter No Replace the optical engine The lamp takes about 90 seconds to achieve full brightness No ...

Page 99: ... Service Manual 99 Remote Problems Infrared remote problem Does the remote work No Use known good batteries in the remote Use a known good remote with the projector Does the remote work No Replace the controller ECA ...

Page 100: ...good keypad available for substitution No Substitute a known good controller ECA No Replace the keypad Yes Replace the controller ECA Yes Substitute the good keypad Does the projector respond to key presses No Replace the controller ECA Yes Replace the keypad Does the projector respond to key presses ...

Page 101: ...ohms If speaker sounds bad it may be a bad speaker cone Substitute good speaker Sound good Replace controller ECA Measure less than 6 ohms Replace speaker Replace speaker But note A shorted speaker can damage the audio amp on the controller ECA Run the projector with audio for 30 minutes If the problem returns replace both the controller ECA and the speaker if the resistance across J 500 no longer...

Page 102: ... the menu appear No Flash or reflash the latest software into the projector Replace the controller ECA Does the menu appear No Yes If the remote works and the keypad doesn t go to Keypad problems Try pressing the Menu button on both the remote and keypad If the keypad works and the remote doesn t go to Remote problems Yes ...

Page 103: ...ker Hsync Vsync SVHS Composite Keypad I2 C 5V 12V 8 5V 3 3V Lamp enable 5V Lamp Lit 3V Lamp Lamp HV Reset Stereo TV audio input Computer stereo input R L R L TX Lamp Lit Lamp Enable DMD Power OK Lamp Lit PS temp Color Wheel sensor Keypad Microcontroller Flash SDRAM EEPROM Memory Sync M1 digital or analog connector RX Genisis Deinterlacer Analog to Digital Converter Swift Analog ASIC RGB RGB DVI Re...

Page 104: ...TDP T1 LP340 Service Manual 98 LP350 LP340 LP340B Controller ECA Voltages 3 volts ...

Page 105: ...059 xx Also part of speaker fan bracket assembly Leveling foot assembly 505 0777 xx Lens cap 340 0686 xx Front bezel 505 0636 xx Focus ring 505 0640 xx Lamp door 505 0638 xx Speaker fan bracket 505 0643 xx 60mm fan 526 0058 xx Also part of speaker fan bracket assembly Elevator assembly 505 0076 xx Rear bezel 505 0637 xx Rear nameplate 505 0668 xx Top nameplate 020 0846 xx ...

Page 106: ...m of the chassis DMD heat sink Part of DMD mounting kit 505 0778 xx DMD stiffener Part of DMD mounting kit 505 0778 xx Controller ECA LP340 510 1508 xx LP340B 510 1573 xx LP350 510 1524 xx Chassis 330 0602 xx Optical engine LP340 340B 530 0111 xx LP350 530 0110 xx Power supply 510 1486 xx Top case ...

Page 107: ...optical engine They are also available separately The lamp housing also includes the 80mm fan the lamp blower and the safety switch cable Lamp blower 526 0056 xx Optical engine LP340 530 0111 xx 80mm fan 526 0057 xx Safety switch cable includes thermal switch and interlock switch 526 0057 xx Lamp housing LP340 505 0631 xx ...

Page 108: ...and adjust the DMD bias setting See Updating the DMD bias setting for instructions Controller ECA LP340B 510 1573 xx When installing a new controller ECA you must check and adjust the DMD bias setting See Updating the DMD bias setting for instructions DMD cap All 340 0601 xx Plastic cover with Velcro strap used to secure DMD to engine housing when removing the engine DMD mounting kit All 505 0778 ...

Page 109: ...68 xx Fits onto rear bezel Nameplate InFocus top All 020 0846 xx Required for new top case Optical engine LP340 LP340B 530 0111 xx Includes all components in the light path except the lamp Includes DMD cover to protect DMD Optical engine LP350 530 0110 xx Includes all components in the light path except the lamp Includes DMD cover to protect DMD Power supply insulator All 120 0147 xx UL approved p...

Page 110: ...h Chassis LP340 340B 350 330 0604 xx Both Shield I O 505 0631 xx LP340 S A Lamp Housing SVGA 505 0632 xx LP350 S A Lamp Housing XGA 505 0643 xx Both S A Speaker Fan Vent LP340 340B 350 505 0719 xx Both Leveling Foot 505 0734 xx Both S A Top Enclosure LP340 340B 350 505 0735 xx Both S A Bottom Enclosure LP340 340B 350 505 0736 xx Both S A Front Bezel LP340 340B 350 505 0737 xx Both S A Rear Bezel L...

Page 111: ...in length Audio Adapter All 210 0177 xx Y adaptor with two RCA plugs on one end and a female 3 5mm stereo mini jack on the other end To be used with the audio cable 210 0018 xx when connecting a video player Executive Plus Remote All HW EXPLUS Six button IR remote with a disc mouse Two AAA batteries included Lamp Module All SP LAMP LP3E Installed in projector Lens Cap All 340 0686 xx User s Guide ...

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